cog-swell



-.(N o Model.) I 21She"etsSh t 2, W. A. COGSWELL.-

v Stop Motion for Governor's. No.- 2l 3-6,781. Patented'lan. 18, I881.

' ".PEI'ERS, FIIOTO-LITHOGRAPMER, WASHINGTON. 04 C.

UNITED STATES PATENT OFFICE.

WILLIAM A. GOGSWELL, OF ROCHESTER, NEW YORK, ASSIGNOR TO J UNIUS J UDSON OF SAME PLACE.

STOP-MOTION FOR GOVERNORS.

SPECIFICATION forming part of Letters Patent No. 236,781, dated January 18, 1881.

Application filed J une 7, 1880.

To all whom it may concern:

Be it known that I, WILLIAM A. COG-SWELL,

a citizen of the United States, residing at Rochester, Monroe county, New York, have invented a certain new and useful Improvement in Stop-Motions for Governors; and Ido hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying; drawings, in

IO Which Figure 1 is a plan of a governor provided p with my improvement. Fig. 2 is a front elevation of the same. Figs. 3, 4t. and 5 are detail views.

My improvement relates to stop-motions for governors; and it consists in the construction and arrangement of parts hereinafter more fully described and claimed.

The drawings show what is known as the Judson governor, the construction of the same being so well known as not to require special description.

The arrangement constituting the stop-motion is as follows:

A is a swinging arm, which is jointed at a to turn freely on the counter or side shaft, B, which gives motion to the governor. On the outer end of this arm is ahead, I), through which passes a rod or shaft, 0, the same being se- 0 cured by a set-screw,'c, or by other means.

This shaft is of considerable length and extends some distance outward and beyond the driving-band. D.

E is an idler-pulley turning freely on shaft 3 5 O, and capable of a lateral sliding movement thereon sufficient to follow with the band in case the latter should be thrown 0% from its pulley F. The idler-pulley rests upon and is supported by the band, and in that condition 40 the moving arm A is held upright. In case the band should break or be thrown off from its pulley the swinging arm will fall from its own gravity. In case the band should run off the idler slides laterally on its shaft, as indicated by the dotted lines, and the swinging arm then also falls. By being adjustable in the head I) the shaft 0 can be adjusted out to any length, and having no collars the shaft allows free sliding movement of the pulley.

G is a fulcrum-arm attached to the arch of (No model.)

the governor and projecting outward some distance.

H is a rock-lever, pivoted at d to the outer end of the arm, so as to turn freely. The end next the governor-arch is made the heaviest, so that it will hang down by its own Weight.

I is a catch bolted or otherwise attached at f to the swinging arm A. This catch has a right-angled end, g, which projects over and rests above the end of the rock-lever H. When 6c the swinging arm falls by the breaking or running off of the band the end 9 of the catch strikes the end of the rock-lever and trips it,

so as to throw the outer or long end of the lever upward. The catch is pivoted upon the swinging arm so that it can be changed to any angle, one way or the other, as shown in dotted lines, Fig. 5. It is also provided with a longitudinal series of holes, h h, by which the catch can be lengthened or shortened at 0 pleasure. By this means the bent end of the catch can be adjusted exactly to strike and trip the lever, and it also enables the swinging arm to be raised or lowered to meet different heights or positions of the driving-band and yet strike the rock-lever properly. By means of the adjustability of the catch it is also adapted to governors of different sizes.

K is a spring attachment connected with the top of the valve-casing, and L is a lever resting in a fulcrum-bearing, M, and connecting with the valve-rod N.

The spring attachment consists of a barrel, 'i, in which rests a follower, 7c, and a rod, I, forced down by a spring, m. The rodl extends up through an oblong slot in the top of the barrel to the end of the lever L, and has at its top a hook, it, which hooks upon the end of the lever. The downward pressure of the spring causes the lever to bear up against the go valve-rod and hold the upper collar of the same against the swivel with which the governor-arms connect. The valve-rod runs free downward through the swivel when the outer end of lever L is raised. 5

The operation is as follows: When the band breaks or runs off the swinging arm A falls, the catch I strikes and tilts the rock-lever H, and the long arm of said lever strikes the rod 1, throws the hook at from its engagement with too the lever L, and the end of the rock-lever H, then striking up against the lever L, operates the same so as to force the valve-rod N downward, closing the valve and shutting off the steam.

The outer end of the governor-arch sleeve P is turned down to form a shouldered hear ing, p, on which rests the eye of the swinging arm A. The shaft B, which passes through the sleeve, is provided with a shoulder, 1", which bears upon the outer side of the eye. By this means the eye of the shaft is inclosed between two shoulders without the use of collars, and a firm and secure bearing for the swinging arm is provided, which will always keep it in place.

The lever L is held in its place in the bearin g M by a knife-edged bearin g below the lever and across-pin above. To prevent the hearing M from being drawn from place in the upward action of the lever, the lower end of the bearing has a socket, s, in which fits a neck, 2, of the supporting-block It, and in this neckis formed a circumferential groove, u, into which strikes a set-screw, r, passing through the socket. The block It has a screw at its bottom, which screws into the top of the valvecase and secures the spring attachment in place. The arrangement above described not only preventsthe bearing M from being drawn 011' in the upward action of the lever, but it also allows said bearing to be turned axially, so that the fulcrum can be brought in line with the lever whatever may be the position of the block It when screwed into the valvecasing.

Havingthns described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a governor, the combination of the swinging arm A, provided with the idler-pulley E, resting upon and supported by the band, the catch I, attached to the swinging arm, the

pivoted rock-lever H, with one end resting under the catch and the other extending to 5 the disengaging device, the spring attachment K, provided with the rod 1, and the lever L, extending to and connected with the valve-rod N, the whole so arranged, as described, that the lever H will disengage rod lfrom lever L when the band breaks or is thrown from its pulley, as herein set forth.

2. In a governor, the combination, with the spring attachment K and the lever L, connected with the valve-rod of the governor, of the rod 1, provided with a hook, n, at its top, engaging :ith and holding the end of the lever, said book being open on one side, so as to be capable of being thrown off by thelever H, as shown and described, and for the pur- 6o pose specified.

3. In a governor,the combination of a spring attachment, K, provided with a rod, 1, having an open hook, n, at its top, a lever, L, with which the hook connects, said lever extending to and connecting with the valve-rod, and a rock-lever, B, so arranged relatively to the rodl and lever L as to first strike the rod and disengage the hook and then strike up under and elevate the lever, as herein shown and described.

4. In a governor, the combination,with the swinging arm Aand rock-lever H,of the catch I, attached to the swinging arm, said catch being constructed with the bent end g and with the series of holes h h, by which it may be adjusted to different positions, as and for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

W. A. (JOGSWELL.

\Vitnesses R. F. ()sooon, JACOB SPAIIN. 

